About 32 results
https://drivepatents.com/patents/985476 · 20 Mar 2013
The invention relates to a circuit for a battery-operated small electric appliance having a rechargeable battery (B), a control circuit (uC) for measuring the charging current of the rechargeable battery (B), and a DC-DC converter (DC/DC) which supplies th...
https://drivepatents.com/patents/995505 · 5 Dec 2012
Disclosed is a high efficiency charging apparatus, comprising: a power supply which is a source for supplying electricity for charging; a speed setting unit setting an oscillating frequency and outputting an electrical self-oscillating signal having a freq...
https://drivepatents.com/patents/997653 · 3 Oct 2012
A dc energy store (2) that includes auxiliary systems (68) can be operated in one or more different modes, including a self-supporting mode, an island mode and a normal mode. In the self-supporting mode a first controller (24) uses a voltage demand signal ...
https://drivepatents.com/patents/999707 · 8 Aug 2012
A system and method for enabling compatibility of wired charging with wireless charging are disclosed. The system includes an interface circuit, a wired charging unit and a wireless charging unit. The interface circuit is configured to connect the wired ch...
https://drivepatents.com/patents/1004853 · 29 Feb 2012
A method of determining a charger of a mobile terminal, and which includes receiving, via a controller of the mobile terminal, a connection signal indicating the charger is connected to the mobile terminal; setting, via the controller, a charging current o...
https://drivepatents.com/patents/1008435 · 19 Oct 2011
A voltage converter for charging an energy storage module from an alternating current line voltage (AC), includes a first charging stage, coupled to the energy storage module (105), converting the line voltage to a first rectified direct current module cha...
https://drivepatents.com/patents/1011050 · 13 Jul 2011
Systems and methods are disclosed for improving power efficiency in battery-charging DC power control systems when a power source input voltage is fluctuating. Power is received from the power sources in the form of AC or DC electrical energy and is contro...
https://drivepatents.com/patents/1067681 · 3 May 2006
A battery charging apparatus includes a switching power source supplying a current to a battery pack (2), an input voltage detecting unit (100) detecting an input voltage of the switching power source, a charging current control unit (60) that detects a ch...
https://drivepatents.com/patents/1069985 · 15 Feb 2006
According to a first aspect of the invention a battery charger and method of charging a battery includes an input circuit that receive an ac input having a period of T seconds and provides a dc signal. A converter receives the first dc signal and provides ...
https://drivepatents.com/patents/1069984 · 15 Feb 2006
A method and apparatus for charging batteries includes using an input rectifier to receive an ac input and provide a dc signal. A converter receives the dc signal and provides a converter output. An output circuit receives the converter output and provides...